Product Overview

This is a premium replacement cylinder liner designed for Caterpillar D7D and D7E diesel engines. Engineered for durability and precise fitment, it is an essential component for major equipment like the EC240B and EC290B excavators. We supply this critical engine part globally, with extensive experience serving key industrial markets across North America, Europe, Asia-Pacific, and the Middle East.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications to ensure perfect fit and optimal engine performance.
• Superior Material: Made from high-grade cast iron alloy for exceptional wear resistance and thermal stability under heavy loads.
• Enhanced Durability: Advanced machining and surface finishing reduce friction and extend the service life of the entire piston assembly.
• Reliable Performance: Ensures proper compression and oil control, maintaining engine power and efficiency in demanding applications.
• Global Compliance: Produced for the international aftermarket, meeting the quality standards required for worldwide export and use.

Technical Specifications

OEM Cross-Reference

This cylinder liner directly replaces the following OEM part numbers:

• Caterpillar: 0425-3772, 04253772

Compatibility

This cylinder liner is compatible with the following engine and equipment models:

• Compatible Engine Models: Caterpillar D7D Diesel Engine, Caterpillar D7E Diesel Engine.
• Primary Equipment Application: Caterpillar EC240B Excavator, Caterpillar EC290B Excavator.
• Typical Year Ranges: Fits machines from the late 1990s to mid-2000s corresponding with the D7D/D7E engine series and EC240B/EC290B model production.

Global Supply & Distribution

We are a trusted global supplier of heavy-duty engine components. Our logistics network ensures reliable worldwide shipping to major industrial hubs and ports.

• Worldwide Shipping: We export to all major continents, including North America, South America, Europe, Africa, the Middle East, and Asia-Pacific.
• Fast Delivery: Consolidated shipments ensure cost-effective and timely delivery to key logistics centers. We work with major freight forwarders for air and sea transport.
• Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is prepared to full international trade compliance standards for smooth customs clearance.

Quality Assurance

Every cylinder liner is subject to rigorous quality control to meet the high demands of the global B2B market.

• Manufacturing Standards: Produced using precision CNC machining and honing processes to achieve exact dimensional tolerances and surface finish (Rz/Ra).
• Testing: Components undergo dimensional verification, visual inspection, and material hardness testing to ensure consistency and reliability.
• Warranty: Backed by a standard manufacturer’s warranty against defects in material and workmanship, providing confidence for our B2B buyers and distributors.

FAQ

Q1: Is this cylinder liner a direct OEM replacement for my CAT D7E engine?
A1: Yes. This liner is manufactured to the exact specifications of the original Caterpillar part number 0425-3772. It is designed as a direct, drop-in replacement, requiring no modifications for proper installation in D7D and D7E engines.

Q2: What is the typical service life of this replacement liner when installed correctly?
A2: Service life depends heavily on operating conditions, maintenance schedules, and engine load. However, when installed with a matching piston kit and following proper engine break-in procedures, this high-quality liner is engineered to provide service life comparable to the original part, ensuring long-term reliability.

Q3: Do you provide technical support for international buyers regarding fitment and installation?
A3: Absolutely. We provide detailed technical specifications and part drawings to confirm fitment before purchase. Our support team is experienced in assisting international clients with application questions to ensure the correct part is selected for their specific engine serial number and machine model.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .